Greenhouse application of Steinernema yirgalemense to control fungus gnats, Bradysia impatiens

Greenhouse application of Steinernema yirgalemense to control fungus gnats, Bradysia impatiens Bradysia impatiens Johannsen (Diptera: Scaridae) has recently been identified as a pest, in various greenhouse-cultured crops in South Africa. The control potential for different concentrations of a local entomopathogenic nematode (EPN), Steinernema yirgalemense Nguyen, Tesfamariam, Gozel, Gaugler and Adams, on a natural population of B. impatiens was determined in a cucumber greenhouse. Additionally, the effect of potting media on nematode movement to control an artificial population of fungus gnats was tested. Doubling the EPN dosage, from that recommended by a commercial product (5 × 105 IJs m−2), reduced the fungus gnats significantly after 21 days. The three different types of potting media, consisting of pine sawdust, coco coir, and a mixture of both coir bale and vermiculite, all had a positive effect on the movement of S. yirgalemense. A significant mortality was achieved for the introduced fungus gnat larvae. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png BioControl Springer Journals

Greenhouse application of Steinernema yirgalemense to control fungus gnats, Bradysia impatiens

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Publisher
Springer Journals
Copyright
Copyright © 2018 by International Organization for Biological Control (IOBC)
Subject
Life Sciences; Entomology; Plant Pathology; Agriculture; Animal Ecology; Animal Biochemistry; Behavioral Sciences
ISSN
1386-6141
eISSN
1573-8248
D.O.I.
10.1007/s10526-018-9895-3
Publisher site
See Article on Publisher Site

Abstract

Bradysia impatiens Johannsen (Diptera: Scaridae) has recently been identified as a pest, in various greenhouse-cultured crops in South Africa. The control potential for different concentrations of a local entomopathogenic nematode (EPN), Steinernema yirgalemense Nguyen, Tesfamariam, Gozel, Gaugler and Adams, on a natural population of B. impatiens was determined in a cucumber greenhouse. Additionally, the effect of potting media on nematode movement to control an artificial population of fungus gnats was tested. Doubling the EPN dosage, from that recommended by a commercial product (5 × 105 IJs m−2), reduced the fungus gnats significantly after 21 days. The three different types of potting media, consisting of pine sawdust, coco coir, and a mixture of both coir bale and vermiculite, all had a positive effect on the movement of S. yirgalemense. A significant mortality was achieved for the introduced fungus gnat larvae.

Journal

BioControlSpringer Journals

Published: Jun 5, 2018

References

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